var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
var {create} = require('express-handlebars');
var expressSession = require('express-session');
var flashMiddleware = require('./middleware/flash');

var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');
var newsletterRouter = require('./routes/newsletter');
var contestRouter = require('./routes/contest');

var app = express();

// view engine setup
const hbs = create({
  extname: 'hbs',
  defaultLayout: 'layout',
  layoutsDir: __dirname + '/views/layouts/',
  partialsDir: __dirname + '/views/partials/',
  helpers: {
    section: function(name, options){
      if(!this._sections) this._sections = {};
      this._sections[name] = options.fn(this);
      return null;
    }
  }
});
app.engine('hbs', hbs.engine);
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'hbs');

app.use(expressSession({
  resave: false,
  saveUninitialized: false,
  secret: 'mycookiesecret'
}));
app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use(flashMiddleware);

app.use('/', indexRouter);
app.use('/users', usersRouter);
app.use('/newsletter', newsletterRouter);
app.use('/contest', contestRouter);

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  next(createError(404));
});

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  console.log(err);
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;
